cryonautn.
/ˈkrʌɪə(ʊ)nɔːt/, U.S. /ˈkraɪəˌnɔt/, /ˈkraɪəˌnɑt/ A person who is cryogenically preserved with a view to being revived in the distant future.
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1968 P. M. McGrady Youth Doctors ii. 29 To date, only one cryonaut has had a go, a former professor of psychology who died in 1967 of cancer.
1974 C. Ludlam Hot Ice i. ii, in Drama Rev. 18 ii. 92/1 The cost of keeping a cryonaut frozen will be two thousand dollars a year, Mr Wunderlich, not taking into consideration future devaluations of the dollar.
1993 Plain Dealer (Cleveland, Ohio) (Nexis) 5 Dec. 6 h Cooled to the temperature of dry ice, the cryonaut is wrapped in a dacron sleeping bag and hung by its feet in an aluminum capsule of liquid nitrogen.
2004 C. Milburn in N. K. Hayles Nanoculture 127 Freeze the body now and eventually nanotechnology will resurrect the subject..maybe even building an entirely new body for the cryonaut.
This is a new entry (OED Third Edition, June 2011; most recently modified version published online March 2022).
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n.1968